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-rw-r--r--src/runtime/haskell/PGF/Linearize.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime/haskell/PGF/Linearize.hs b/src/runtime/haskell/PGF/Linearize.hs
index 79da0e823..84b1b116f 100644
--- a/src/runtime/haskell/PGF/Linearize.hs
+++ b/src/runtime/haskell/PGF/Linearize.hs
@@ -63,7 +63,7 @@ type CncType = (CId, FId) -- concrete type is the abstract type (the category
linTree :: PGF -> Language -> Expr -> [Array LIndex BracketedTokn]
linTree pgf lang e =
- [amapWithIndex (\label -> Bracket_ cat fid label [e]) lin | (_,((cat,fid),e,lin)) <- lin0 [] [] Nothing 0 e e]
+ nub [amapWithIndex (\label -> Bracket_ cat fid label [e]) lin | (_,((cat,fid),e,lin)) <- lin0 [] [] Nothing 0 e e]
where
cnc = lookMap (error "no lang") lang (concretes pgf)
lp = lproductions cnc